A change of plea hearing is set for this afternoon for 47-year-old Rene Roberge of Sherbrooke, Quebec, who had previously pleaded not guilty.
Roberge's lawyer had said a plea deal was likely to end the case without a trial.
Authorities allege Roberge flew to Florida after making contact on the Internet with undercover investigators posing as a 14-year-old boy and his father to arrange a sexual encounter.
Agents also allege they found child pornography on Roberge's tablet computer.
In addition, Roberge is accused of planning to travel to San Antonio, Texas, to have sex with a teenage boy.
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